Screen and guard for windows.



PATBNTED DEC. 12, 1905.

A. JOHNSTON. SCREEN AND GUARD FOR. WINDOWS.

2 SHEETS-SHEET 1.

APPLICATION FILED JUNE 9.1905.

vwentoz 57262" JOMPZZW,

No. 807,276; PATENTBD DEC. 12, 1905.

A. JOHNSTON. SCREEN AND GUARD FOR WINDOWS.

APPLICATION FILED JUNE 9. 1905.

2 sums-SHEET 2.

mzwtoz UNITED STATES PATENT OFFICE.

ABNER JOHNSTON, OF LONG ISLAND CITY, NEW YORK, ASSIGNOR OF TWO-THIRDS TOWILLIAM HARVEY AND ONE-THIRD TO HAROLD J. MURTHA, OF NEW YORK, 'N. Y.

Specification of Letters Patent.

Patented Dec. 12, 1905.

Application filed June 9, 1905. Serial No 264,416.

1'0 alt whom it may concern.-

Be it known that I, ABNER JOHNSTON, a citizen of the United States,residing at Long Island City, in the county of Queens and State of NewYork, have invented certain new and useful Improvements in Screens andGuards for Windows; and I do hereby declare that the following is afull, clear, and exact description of the same, reference being had tothe annexed drawings, making a part of this specification, and to theletters of reference marked thereon.

The resent invention has reference to that class 0 screens and guardsfor windows in which lazy-tongs connect with transverse cross and guidebars engaging grooved guides upon the sides of the window-frame, so thatwhen the lower sash is raised the lazy-tongs will be extended and inconnection with the cross and guide bars will provide aprotecting-screen to the open portion of the window to prevent papers ordocuments blowing out therethrough when left open and also as aprotection against children falling out of the window when left open.

The present invention is designed as an improvement upon my formerpatent dated August 2, 1904, Serial, No. 766,262, in which the abovefeatures are embodied therein; and it consists in a screen and guard forwindows constructed substantially as shown in the drawings andhereinafter described and claimed.

Figure 1 of the drawings is a front elevation of a window, showing myimproved screen and guard connected thereto, the same being shown asopen in full lines and closed in dotted lines when the sash is down.

Fig. 2 is a detail view in perspective, showing two arms of thelazy-tongs and the extensible cross-bar to which said arms are pivoted;Fig. 3, a detail perspective view of a portion of the grooved guide withwhich the ends of the cross and guide bars engage; Fig. 4, a plan shownas in a raised position, the lower horizontal rail of the sash havingconnected there to in any suitable manner a rail or cleat C, which maybe of any preferred construction and provided with a knob a forconvenience in raising or lowering the sash.

To the sides of the window-frame A are upright guides D, which guidesare of special construction and consist in brackets 12, from whichproject U -shape extensions 0, the brackets enabling the guides to beconven iently attached to the sides of the windowframe by suitablefastenings and the U-shape extensions providing means for engaging thehooked ends (1 of slidable arms E, as shown in Fig. 4 of the drawings.The arms E are slidablyv mounted upon the ends of the stationary bars F,thereby enabling the arms to be extended or contracted to adapt the armsto the difference in the width of the windowframe. The stationary barand the slidable arms upon the ends thereof I shall term when togetheran extensible bar, and to the sta tionary bar are suitably pivoted thecrossarms G H of the lazy-tongs, the ends of the arms being' suitablypivoted to the arms above and below the same, as shown in Fig.

1 of the drawings, forming together the lazytongs, as shown.

The bars F and the arms G of the lazy-tongs are preferably grooved,channeled, or corrugated to obtain the maximum of strength with theminimum of lightness, and the bars near their ends have longitudinalgrooves e to receive longitudinal ribs f in the slidable arms E, so asto form guides for the arms when moved upon the bars. The slidable armsE have overlapping flanges g, which embrace the edges of the bars, asshown in Figs. 2 and 5 of the drawings, therebyforming, together withthe longitudinal groove in the bar and the longitudinal ribs in thearms, a perfect and rigid means for holding together the bar and armsand guiding them in their sliding movement to adapt the bar and arms tothe difference in the width of windowframe.

The two cross-arms at the upper end of the lazy-tongs are pivoted to therail or cleat O, and the lower ones of said arms are pivoted tobracketsh upon the sill I of the windowframe or may be pivoted in anymanner found most preferable, as may also the upper end of thelazy-tongs.

I have shown only one of the slidable arms upon each of the bars; but itis evident that either end may be provided with such arms as founddesirable, and the several parts of the attachment may be made of eitherwood or metal, or of both, and either corrugated or plain, as founddesirable, and such modification and changes as would come withinmechanical judgment may be resorted to in constructing the several partsof the attachment without departing from the essential features of theinvention.

Having now fully described my invention, what I claim as new, and desireto secure by Letters Patent, is

l. A screen and guard for windows, comprising a plurality of lazy-tongsconnecting with the sash and sill of the window-frame, a plurality ofhorizontal guide bars having hooked ends to which said lazy-tongs arepivoted, and upright guides upon the windowframe having U-shapeextensions With which the hooked ends of the guide-bars engage,substantially as and for the purpose set forth.

2. A screen and guard for windows, comprising a plurality of lazy-tongspivotally connecting with the window sash and sill of the frame thereof,a plurality of horizontal guidebars having extensible ends, and uprightguides upon the window-frame with which the guide-bars engage,substantially as and for the purpose speclfied.

3. A screen and' guard for windows, comprising a plurality of lazy-tongsconnecting with the sash and with the window-frame, a plurality ofhorizontal guide-bars having horizontal guide-grooves at their ends, andarms slidable thereon having longitudinal ribs to engage the grooves inthe bars and overlapping flanges to engage the same, and upright guidesupon the window-frame with which the ends of the extensible bars engage,substantially as and for the urpose described.

In testimony whereof faflix my signature in presence of two witnesses.

ABNER JOHNSTON.

Witnesses:

HENRY B. PEIFFER, JOHN D. MOEWEN.

